Weighing scale



R. VON FROMMER WEIGHING SCALE Dec. s, 1925. 1,5e5,12s

Filed Feb. 28. 1925 Patented Dec. 8, 1925.

UNITED STATES RUDOLF VON FROMMER, OF BUDAPEST, HUNGARY.

' WEIGHING- SGALE.

Application filed February 28, 1925.

T0 all whom z't may concem:

Be it known that I, RUDOLF VON FROM- MER, a subject of Hungary,resicling at 158 Soroksariut, Budapest, Hungary, have invented new ancluseful Improvements in 01 Relating to Weighing Saales, of which thefollowing is a specification.

This invention relates 130 weighing-scales 0f the type having their pansarrangecl over the scale-beam whereby the latter is causecl so form in aknown manner one member of a parallelogram.

The invention has for its object 130 enable the parts of theweighing-scale to be manufacturecl uncler the seclusion of cast-ironthat is brittle material out of sheet-iron or iron-plates by pressing orother similar working methods in such a manner as to procluce as far aspossible the whole of the scale by means 0:E machinery, whereby thetotal weight 0:E the scale ancl the costs of production are reducecl toa minimum without the exactness and sensitiveness of the seale beingthereby lessened in any vvay whatever.

In the accompanying drawin'g one form of the scale accorcling 130 theinvention is illustratecl by way 0f example.

Fig. 1 shows a side elevation of the scale partly in section;

Fig. 2 is a front view;

Fig. 3 shows a detail of the scale in front View;

Fig. 4 is a sectional view of the detail shown in Fig. 3 taken 011 theline IVIV of Fig. 3;

Fig. 5 shows a further detail as seen from below, and

Fig. 6 is a side elevation of the same detail.

Figs. 7 ancl 7 are encl and sicle vievvs of a barhaving'balancing-eclges located ab the middle of the soale-beam, and

Figs. 8 and 8 are end ancl sicle views of a bar having balancing eclgesand locatecl ab the encls of the scalebeam.

' Fig. 9 is a top view of a further cletail 0'f the soale.

The frame o1 the scale comprises two ironplates 1 producecl by pressingand stiffenecl by bellying. The saicl plates 1 a1e interconnectecl bymeans of rocls 2.

Each of: the two plates 1 is bearing on its outside surface a supportingplatze 3 securecl to th.e plates 1 by means of a rod. 2

Serial N0. 12,390.

having its ends riveted on the outside surface of the supporting plates3. At their lower ends the supporting plates are interconnectecl bymeans of a connection-bridge 21 also having its ends rivetecl on theoutside surface of the plates. The said supporting-plates are provicleclWih circular cuts -el in which small plates bearing finn-names,

tracle marks or other inscriptions may be fastened. Thesupporting-plates 3 are also provided at their upper ends withdiskshaped strengthening pieces 10 in Which the bearings 5 of thebalancing-eclges of the scale-beam 7 are securecl. At the micldle of thescalebeam the 1'0d 6 and at oho two ends of the same the rocls 8 allbearing the balancing eclges are rigidly secured. The two rods 8 areadaptecl 130 support the pans -receiving the load. In order to preventthe rod 6 from performing a longitudinal movernent each of thesupporting-plates 3 is provicleclon its outsicle surface with astop-plate 9.

nder each of the pan-holders 15 and secured to the same there isarrangecl a U- shapeol gircler 11 having a bearing 12 fastened to eachof its two ends directed downward, which rast on the balancing edges ofthe rods 8. A longitudinal moven1ent of the pan-holders 15 is preventedin the same manner as described above in con nection with the rod 6 bymeans of stopplates 13 arranged at the ends of the girders 11. Thefingers 19 are located on oho panholclers and are made integral with thesame. Uncler each of the girders 11 there is arianged a thrust-rod 22secured to the middle of the same and made of an iron-plate be nt inU-shape. The said thrust-rods are also macle swan-shaped in order toenable them to avoid the rods 8. The thrust-rocls 22 form tOgether withthe scalebeam 7 and the connection-rod 23 the well known parallelogra1n.The ends of the connection-rod 23 have 130 restin a well known manner onbalancing-edges provided on the thrust-rods 22. For this purpose betweenthe two branches of the thrust-rods 22 there are pro vicled two adjacentplates 24, 25 lying with their surfaces olose t0 each other. The saicllatos 24, 25 which can also be made integral with the thrust-rocls 22are at their to said frame-plates atthe bearings of said scale-beam andhaving openings adapted to 1eceive inscription plates.

13. In a weighingscale as claimed in clain1 l the combination with aframe comprising two plates produced by pressing am]. stamping ofspacingrods adapted to stiflen said frame-plates at their corners andunder the bearings of the scale-beam.

14. In a weighingscale as claimed in c1aim 1 the combination with aframe comprising two plates produced by pressing and stamping of aconnection-bridge connecting said two frame-plates, and a conneotion-rodforming the lower connection member of the parallelogram 0f the sca1esaid connectionbridge having two projections bent down therefrom adaptedto guide said connectionrod.

In testimony whereof I have signed my 20

